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--- uphp:functions:f485open [2017/03/28 20:08]
jeff
+++ uphp:functions:f485open [2021/09/13 05:57] (current)
@@ Line 1: / Line 1: @@
 ======f485open======
 <badge>WMPRO, WMMINI FW >= 1.922</badge> <badge>WMMEGA FW >= 2.0</badge>
@@ Line 5: / Line 6: @@
 ====Description====
-<well size="sm"><html><span style="font-size:125%;color:green;">int
-<span style="color:black;"></html>[[f485open]]
+<well size="sm"><html>
-<html>(
+<span style="font-size:125%;color:green">int
-<span style="color:green;">int
+<span style="color:black">f485open (
-<span style="color:blue;">$baud<span style="color:black;">,
+<span style="color:green">int
-<span style="color:green;">int
+<span style="color:blue">$baud<span style="color:black">,
-<span style="color:blue;">$parity
+<span style="color:green">int
-<span style="color:black;">)
+<span style="color:blue">$parity
+<span style="color:black">)
 </html></well>
@@ Line 20: / Line 22: @@
 ====Parameters====
-<html><span style="color:blue;"><b>$baud</b><span style="color:black;"></html>:  Rate in bits per second
-<html><span style="color:blue;"><b>$parity</b><span style="color:black;"></html>:  0 (even parity) or 1 (odd parity)
+<html><b><span style="color:blue">$baud<span style="color:black"></b></html>:  Rate in bits per second
-====Return Value====
+<html><b><span style="color:blue">$parity<span style="color:black"></b></html>:  0 (even parity) or 1 (odd parity)
-Upon success it returns a file handle which may be used together with the other file functions that require a handle such as [[fgets()]], [[fwrite()]], [[fclose()]] and [[feof()]]
-If the attempt to open the RS-485 port fails it will return 0
+====Return Values====
+<html><b><span style="color:green">Integer<span style="color:black"></b></html>:  File handle, or 0 if the attempt to open the RS-485 port fails
+The file handle may be used together with the other file functions that require a handle such as [[fgets()]], [[fwrite()]], [[fclose()]] and [[feof()]]
 ====Example====
-**Open the 485 port at 115200 baud with even parity:**
+===Open the 485 port at 115200 baud with even parity===
 <code php>
@@ Line 49: / Line 53: @@
 ====See Also====
 [[how_tos:Serial Port Programming]] - Some information on connecting and using the serial ports
+[[fopen()]] - Open a file for reading or writing
 [[fseropen()]] - Open the serial port at the specified baud rate with optional parameters
@@ Line 55: / Line 62: @@
 [[fsockopen()]] - Open an internet socket connection with optional timeout
-[[fopen()]] - Open a file for reading or writing
+[[fread()]] - Read bytes from a file, stream or socket
-[[fclose()]] - Close a file, stream or socket
+[[fgets()]] - Return a single line from a file, stream or socket, with optional size limit
-[[feof()]] - Test if no more data is available in a file or stream
+[[fwrite()]] - Write data to a file, stream or socket
-[[fgets()]] - Return a single line from a file or stream, with optional size limit
+[[feof()]] - Test if no more data is available in a file, stream or socket
-[[fread()]] - Return bytes from a file or stream
+[[filesize()]] - Return the size of a file, or the number of unread bytes in a stream or socket
-[[fwrite()]] - Write data to a file or stream
+[[fseek()]] - Position the file pointer in an open file
+[[ftell()]] - Return the current position of a file read/write pointer
+[[fclose()]] - Close a file, stream or socket

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